Netherland, Sewell & Associates, Inc.

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Worldwide Petroleum Consultants

Reputation. Expertise. Service.

Dallas / Houston / São Paulo / London / Mexico City / Singapore / New Delhi

Property Evaluation Seminars

Each year, NSAI conducts its highly regarded Oil & Gas Property Evaluation Seminar in multiple locations for non-technical financial professionals whose work relates to the petroleum industry. Our panel of in-house experts will help you gain a better understanding of reserves evaluations and reports.

Pricing / Definitions / Regulations

SEC Pricing Data

These are some of the resources that NSAI has used in developing its procedures and standards for reserves reports to be used in filings with the SEC, including pricing data (compiled monthly) and guidance. More companies use NSAI for their SEC reporting needs than any other petroleum consulting firm.

Geological / Geophysical / Engineering

Disciplines & Capabilities

NSAI provides a complete range of geological, geophysical, petrophysical, and engineering services for clients large and small. Our team of expert oil and gas consultants has the technical experience and ability to perform these services in any of the onshore and offshore oil and gas producing areas of the world.

Based on Public Filing Data

The #1 Choice for SEC Reserves Reporting

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An NSAI report honors all the data and industry reserves definitions to give a full and fair inventory of reserves and cash flow. Each report is based on sound judgment, broad experience, technical expertise, and accepted practices.

Our clients expect quality and integrity. We demand it.

Netherland Sewell Seal Blue
A Global Reach

Clients Familiar With Our Work

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Netherland, Sewell & Associates, Inc. is one of the most respected names in independent reserves reporting. Our technical staff has successfully completed thousands of challenging assignments for leading petroleum and financial concerns around the globe. Our clients include small privately owned oil and gas companies, major and independent oil and gas companies, national oil and gas companies, financial institutions, and investors. A few of the companies familiar with our work are shown below.